Retrofitting is simply upgrading or renovating a house so it will keep the heat in during the heating season and keep it cooler during the summer. This means adding insulation, caulking and weatherstripping, improving or replacing windows and doors, and improving the mechanical systems. Retrofitting also means including energy efficiency measures in all your renovation and repair activities. Within the context of the Canadian climate, retrofitting makes a lot of sense. Learn why energy retrofits are a good idea. Energy Retrofits are a Good Idea Energy efficiency. Retrofitting costs less than producing new energy supplies to heat a house. More than 16 percent of Canada’s annual energy goes to heat our homes, and this energy comes mostly from non-renewable resources such as oil and gas. Comfort and health. A well-insulated, air sealed and ventilated house makes for a comfortable home. It is also much quieter, and there is less dust…